Claims
- 1. A compound of the formula ##STR7## wherein R.sup.3 is selected from the group consisting of lower alkyl, allyl and benzyl; X is selected from the group consisting of hydrogen, halogen, lower alkyl, lower alkoxy, hydroxy, nitro, and amino; and R.sup.4 is selected from the group consisting of hydrogen, lower alkyl, benzyl, diphenylmethyl, trichloroethyl and trimethylsilyl; and pharmaceutically acceptable salts thereof.
- 2. The compound of claim 1 wherein R.sup.3 is lower alkyl.
- 3. The compound of claim 2 wherein R.sup.3 is methyl, X is hydrogen, and R.sup.4 is methyl.
- 4. The compound of claim 2 wherein R.sup.3 is methyl; X is hydrogen; and R.sup.4 is benzyl.
- 5. The compound of claim 2 wherein R.sup.3 is methyl; X is hydrogen; and R.sup.4 is diphenylmethyl.
Parent Case Info
This application is a divisional of Ser. No. 276,548 filed July 31, 1972 which in turn is a continuation-in-part of Ser. No. 108,952 filed Jan. 22, 1971, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4008229 |
Spitzer |
Feb 1975 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
276548 |
Jul 1972 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
108952 |
Jan 1971 |
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